Between animal and human medicine, there is no dividing line-nor should there be.

The task of science, therefore, is not to attack the objects of faith, but to establish the limits beyond which knowledge cannot go and found a unified self-consciousness within these limits.

It is the curse of humanity that it learns to tolerate even the most horrible situations by habituation.

Life itself is but the expression of a sum of phenomena, each of which follows the ordinary physical and chemical laws.

Belief begins where science leaves off and ends where science begins.

Belief cannot be reckoned with in terms of science, for science and faith are mutually exclusive.

Marriages are not normally made to avoid having children.